Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (01): 145-149.doi: 10.13475/j.fzxb.20181206005

• Apparel Engineering • Previous Articles     Next Articles

Simulation optimization of one-piece flow T-shirt assembly line based on Flexsim

SONG Ying(), TIAN Hong, LI Jingyi   

  1. College of Clothing and Textile, Eastern Liaoning University, Dandong, Liaoning 118003, China
  • Received:2018-12-27 Revised:2019-10-10 Online:2020-01-15 Published:2020-01-14

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Abstract:

Low production balance rate was witnessed due to backlog, waiting and bottleneck in the production process of one piece flow garment assembly line. This research studies on the simulation optimization of one-piece flow T-shirt assembly line using Flexsim software. The simulation optimization model was established for T-shirt as an example using Flexsim taking the process flow into consideration. Through function analysis, it was possible to modify the operations in the operation line and run the simulation cycle test repeatedly. The establishment of the simulation optimization reduced severity of the bottle-neck problem, and the production balance rate was increased significantly from 80.4% to 95.3%. At the same time, the feasibility of Flexsim simulation in the production process for different clothing pipelines was verified to be applicable.

Key words: T-shirts, Flexsim software, one-piece flow garment assembly line, production balance rate

CLC Number: 

  • TS941.717.87

Fig.1

T-shirt style"

Fig.2

T-shirt process flow chart"

Tab.1

Level of T-shirt process difficulty"

难度等级 判断等级标准 工序案例 工时/s
1级 工时极少、极易操作、易教易会 门里襟粘衬 6
2级 工时适中、难度适中、比较容易操作 扣烫袖口 15
3级 工时较长、难度较大、熟练操作需要较长时间 合肩缝 40
4级 工时极长、难度极大、熟练操作需要很长时间 绱袖 51

Fig.3

One-piece flow garment assembly line Flexsim model of T-shirt"

Tab.2

Process and station distribution"

工位编号 工序编号 工人数 工时/s 设备名称
① 1、8、11、13 1 43 蒸汽熨斗
② 2 1 33 平缝机
③ 3 1 40 蒸汽熨斗
④ 4 1 38 平缝机
⑤ 5、7 1 46 四线包缝机
⑥ 6 1 36 四线包缝机
⑦ 9、15 1 40 绷缝机
⑧ 10 1 51 四线包缝机
⑨ 12、14 1 47 平缝机
⑩ 16、17、18 1 45 锁眼机、钉扣机
? 19 1 36 吸风烫台
合计 11 455

Tab.3

Optimized process allocation"

工位
编号		 设备名称 工时/s 与PL
差值/s		 兼顾
工位		 兼顾后与
PL差值/s
① 蒸汽熨斗 43 2 0
② 平缝机 33 -8 ⑧ 0
③ 蒸汽熨斗 40 -1 ① 0
④ 平缝机 38 -3 ⑨ 0
⑤ 四线包缝机 46 5 0
⑥ 四线包缝机 36 -5 ⑤ 0
⑦ 绷缝机 40 -1 ⑨ 0
⑧ 四线包缝机 51 10 2
⑨ 平缝机 47 6 2
⑩ 手工、锁眼机、钉扣机 45 4 0
? 吸风烫台 36 -5 ①、⑩ 0

Tab.4

Optimized daily production"

时间/d 日产量/件 累计产量/件
1 669 669
2 669 1 338
3 670 2 008
4 669 2 677
5 669 3 346
6 669 4 015
7 669 4 684

Fig.4

Comparison before and after optimization"

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doi: 10.1177/004051756903900205
[1] . Simulation of one-piece flow garment assembly line based on Flexsim software [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(06): 155-161.
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